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Yesterday, Meghan Trainor — the body-positive pop upstart behind “All About That Bass” — probably had the best interview of her life when she learned right in the middle of it that she currently has the No. 1 selling digital song in the country.

Her response? “Oh my god, I want to vomit. That’s amazing.”

Trainor, who beat out Jessie J, Ariana Grande, Nicki Minaj and Iggy Azalea for the honor, did what any person in that situation would do: She called her mom (who gets a shoutout in her hit song).

But her interviewers, Mix 104.1’s Karson and Kennedy, decided to have a little fun with it and pull a harmless prank on Trainor’s mother, who was working out of her jewelry store in the singer’s native town of Cape Cod, Mass.

Kennedy took the lead on the call, asking her mom’s opinion on what he could buy for a young woman. “She just had this really big news dropped on her,” he said. “It’s a congratulatory gift.”